Display screen or portion thereof with icon



FIG. 1 is a front view of a display screen or portion thereof with icon, showing our new design; and,

FIG. 2 is a front view thereof, shown in the context of additional environment.

The broken line showing of the display screen portion in the figures illustrate portions of the display screen or portion thereof with icon and form no part of the claimed design. The broken line showing the mobile terminal in FIG. 2 illustrates environmental structure and forms no part of the claimed design. 

CLAIM The ornamental design for a display screen or portion thereof with icon, as shown and described. 